her 4-year-old son ryan's genome has also been sequenced, and he appears to be in good health. for some parents, gaining knowledge of their children's genome before they are born would help them be better prepared in case their child has special needs, but it will undoubtedly encourage some parents to choose abortion. >> we have some patients who we have followed who have used it for prenatal diagnosis in such a way to avoid having affected children. >> reporter: dr. krantz and nancy spinner are most concerned that the science has few guidelines, including safeguards for patients' privacy. >> we live in a capitalistic society. often when something is technically feasible and fiscally feasible, it is offered, and there are for-profit companies now who are offering this testing to the individual so you can go out yourself and pay the money and get your genome sequenced. the problem now is it's the thousand-dollar genome, but it's the million-dollar interpretation because you can get the sequence but understanding what it does takes hundreds of hours of manpower to interpret and u